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FBI agents ask travelers along the North-South Road if they've seen Abigail Hernandez, who was last seen walking along the road a week ago. (DAN SEUFERT PHOTO)

CONWAY – A dozen law enforcement vehicles, some marked and some not, pulled into a lot off the south end of the heavily used North-South Road at about 2:20 p.m. Wednesday, at almost the exact time Abigail Hernandez was last seen last Wednesday.

About 20 officers, some uniformed state police, some in FBI jackets, and some in plain clothes, walked onto the road, clipboards in hand, and started stopping every car.

As the blockade formed, every car was stopped after 2:30 p.m., at about the time Hernandez was said to be walking home along the road, which begins at the south end at the entrance to Kennett High School.

She was seen walking toward home – which is more than a mile away along the road – at about 2:30 p.m. Her boyfriend, Jimmy Campbell, had seen her walking away on the road and received a text from her with a heart at 2:52 p.m., according to Campbell's father.

Since leaving school and walking down the North-South Road, Hernandez has been missing, and because she is a child, authorities said, a large law enforcement presence has been established in the area to help look for her.

As of Wednesday, authorities still had no concrete direction to follow in the missing persons case, said Senior Associate Attorney General Jane Young.

Police have been using dogs to search the area of woods off of North-South Road this week, and were back there Wednesday morning.

But all traffic was stopped, and each driver questioned, at the roadblock from 2:30 p.m. through 4 p.m. That pushed traffic back for more than a quarter mile on the heavily traveled road, which is a bypass to the downtown area.

State police officers standing in the road waved cars over, after which men in FBI coats approached each driver with questions. They were asked to give their names, their addresses, and information about how much they use the road and when they drive it.

The FBI agents explained to each driver that they were trying to find Hernandez, showing them a wanted photo of her.

"We're asking people who travel this route at this time if they might have seen Abigail," said one FBI agent who did not give his name.

As of 4 p.m., the roadblock was still in place.

After a week's search, Young said the investigation is not slowing down, but is still following leads and seeking information.

Anyone with information about Abigail Hernandez is asked to call 1-800-CALLFBI.